Phenopalm: A phenological model for oil palm at tree scale

Lamade Emmanuelle, Setiyo Indra Eko, Sinaga Khairuddin, Permana Rudi, Listia Eka. 2006. Phenopalm: A phenological model for oil palm at tree scale. In : International Oil Palm Conference (IOPC), Bali, Indonesia, 19-23 June 2006. IOPRI. s.l. : s.n., Résumé, 1 p. International Oil Palm Conference, Bali, Indonésie, 19 Juin 2006/23 Juin 2006.

Matériel d'accompagnement : 1 poster

Résumé : Phenopalm is a simulation model of phenological development of oil palm (leaf emission rate, inflorescence cycles, anthesis, maturation rate and harvesting bunches, prunning leaves...) at tree scale. From two important phenological observations set of data, one from Ivory Cost (Research Station of La Mé) on LM2t x DA10D, the second one from North Sumatra (Marihat Research Station) on Del XLa Me material as wellas on Deli xYagambi, a kern module has been elaborated, MODPHEN (oriented-object programming in Delphi 7.0 environment) which generate for each oil palm tree units composed by one leaf (including leafets, rachis and petiola), and its respective inflorescence axilled. Incrementation is achieved by a thermic time in ° days. This "kernel" is completed by a daily carbone balance between carbon supply and demand from development and needs of all growing organs. A simple carbon supply module (MODSIMPALM) allows to estimate daily the ratio supply/demand and to calculate an internal trophic level (IT) which conducts each steps of the phenological development and influences inflorescence sexualisation, aborption. In the last version of PHENOPALM, a water balance module (MODWATERPALM) is completing the software as well as competition effect between individual palm trees for light and nitrogen absorption (N-LIGHTPALM). The software is running over a period of 8000 days, has been parametrised for 15 different oil palm trees for all materials studied which have different sensitivities for photoperiod and temperature. The model is able to give at tree scale, yield, inflorescence cycles (F, M, A) as well as the prediction of each phonological events date (date of each rank 1, anthesis, maturation and harvest). (Texte intégral)

Mots-clés Agrovoc : Elaeis guineensis

Classification Agris : U10 - Informatique, mathématiques et statistiques
F40 - Écologie végétale

Auteurs et affiliations

• Lamade Emmanuelle, CIRAD-FORET-UPR Ecosystèmes de plantations (IDN) ORCID: 0000-0002-4909-0997
• Setiyo Indra Eko, IOPRI (IDN)
• Sinaga Khairuddin, University of Harapan-North Sumatra (IDN)
• Permana Rudi, University of Islam Bandung (IDN)
• Listia Eka, IOPRI (IDN)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/547755/)

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